Pharamacology 1000 Flashcards
Aciclovir.
ANTIVIRAL
Nucleoside Analogue used to inhibit replication of varicella zoster and herpes simplex.
GIT disturbance at local injection site.
Adenosine.
ANTI-ARRHYTHMATIC
Hyperpolarises cardiac tissue and slows down pacemaker activity via A1 receptors at AVN.
Cause AV block and difficulty breathing, bronchospasm in asthmatics.
Albendazole.
ANTI-NEMATODE
Binds to beta tubulin on microtubules preventing polymerization. Depolmeriation of tubules still occurs naturally leading to reduce in number. Helminth glucose uptake in initestine inhibited.
GIT, Liver.
Allopurinol.
TREAT GOUT
Inhibits Xanthine oxidase which is involved in the production of uric acid from hypoxanthine and xanthine.
Cause rash.
Azathioprine and Mercaptopurine dose should be reduced as enzyme function reduced.
Amethocaine.
ESTER ANESTHETIC.
Shorter half life than an amide anesthetic.
Allergic rash on skin, epithelial damage of cornea.
Amiodarone.
ANTI ARRHYTHMATIC.
Class 3. Blocks potassium channels which prolongs duration of action potential and increase refractory period.
Pulmonary toxicity, skin photosensitivity, hyper/hypo thyroidism.
! Use stuff like CCB and Beta blockers with caution.
Amphotericin.
ANTI FUNGAL.
Targets Egosterol in the fungal cell wall. Causes amphotericin b pores which alter cell permeability.
Nephrotoxicity.
Amoxycillin.
PENICILLIN. Broad spectrum.
Binds to penicillin-binding-proteins.
Penicillins in general.
Adverse effects - affect clotting process and increase bleeding time.
Anastrozole.
NON SELECTIVE AROMATASE INHIBITOR.
Decrease Oestrogen levels. Prevent oestrogen production form androgens via aromatase enzyme.
Adverse reactions are similar to what happens when oestrogen levels are reduced.
Aspirin.
SIMPLE ANALGESIC, ANTITHROMBOTIC.
IRREVERSIBLY inhibits COX reducing thromboxane and prostacyclins.
Atenolol.
BETA 1 BLOCKER.
Treat angina and hypertension. Decreases heart rate and contraction, decreases cardiac output.
Can develop rebound angina, hypertension if drug is quickly withdrawn.
Bupivicaine.
ANESTHETIC.
Longer duration of action than Lignocaine.
Cardiotoxic.
Chloramphenicol.
ANTIBIOTIC.
Binds to 50s and prevents protein synthesis. Treat eye and ear infections.
Myelotoxicity, infants can’t metabolise it - grey baby syndrome, aplastic anemia.
Inhibit liver enzymes and increase the concentration of other drugs.
Ciprofloxacin.
QUINALONE ANTIBIOTIC.
Inhibit DNA topoisomerase 2 and 4, inhibit DNA replication - result in cell death.
Codeine.
MORPHINE ANALOGUE.
Quite weak. Moderate to sever pain.
Constipation, respiratory depression.
Cyclophosphoamide.
NITROGEN MUSTARD ALKYLATING AGENT.
The phosphoramide mustard forms cross links with DNA and interferes with cell replication.
!!! CNS toxicity, Alopecia, Myelosupression, potentially irreversible infertility. !!!
Digoxin.
POSITIVE IONOTROPE, AV block for atrial fibrillation.
Inhibits sodium/potassium pump. Increase in intracellular Sodium and hence calcium.
Cause decreased conduction (AV block, sinus bradycardia) and increased automaticity (tachycardia). Treat digoxin toxicity (tachycardia) with antibodies.